#include <iostream>
#include <fstream>

using namespace std;

int sol[20], ver[20], n;
ofstream fout("submultimi.out");

void afisare(int k)
{
    for (int i=1; i<k; i++)
        fout << sol[i] << " ";
    fout << "\n";
}

void backtracking(int k)
{
    if (k>1)
        afisare(k);
    if (k>n)
        return;
    for (int i=sol[k-1]+1; i<=n; i++)
    {
        if (!ver[i])
        {
            sol[k]=i;
            ver[i]=1;
            backtracking(k+1);
            ver[i]=0;
        }
    }
}

int main()
{
    ifstream fin("submultimi.in");
    fin >> n;
    backtracking(1);
    return 0;
}